CN103300972A - System and method for applying individually coated non-linear elastic strands to a substrate - Google Patents
System and method for applying individually coated non-linear elastic strands to a substrate Download PDFInfo
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- CN103300972A CN103300972A CN2013100787258A CN201310078725A CN103300972A CN 103300972 A CN103300972 A CN 103300972A CN 2013100787258 A CN2013100787258 A CN 2013100787258A CN 201310078725 A CN201310078725 A CN 201310078725A CN 103300972 A CN103300972 A CN 103300972A
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- elastica
- guide portion
- line guide
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/15577—Apparatus or processes for manufacturing
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/15577—Apparatus or processes for manufacturing
- A61F13/15585—Apparatus or processes for manufacturing of babies' napkins, e.g. diapers
- A61F13/15593—Apparatus or processes for manufacturing of babies' napkins, e.g. diapers having elastic ribbons fixed thereto; Devices for applying the ribbons
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/15577—Apparatus or processes for manufacturing
- A61F13/15585—Apparatus or processes for manufacturing of babies' napkins, e.g. diapers
- A61F13/15593—Apparatus or processes for manufacturing of babies' napkins, e.g. diapers having elastic ribbons fixed thereto; Devices for applying the ribbons
- A61F13/15609—Apparatus or processes for manufacturing of babies' napkins, e.g. diapers having elastic ribbons fixed thereto; Devices for applying the ribbons the ribbons being applied in an irregular path
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
- B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
- B05C5/0241—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work for applying liquid or other fluent material to elongated work, e.g. wires, cables, tubes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
- B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
- B29C65/481—Non-reactive adhesives, e.g. physically hardening adhesives
- B29C65/4815—Hot melt adhesives, e.g. thermoplastic adhesives
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
- B29C65/52—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the way of applying the adhesive
- B29C65/524—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the way of applying the adhesive by applying the adhesive from an outlet device in contact with, or almost in contact with, the surface of the part to be joined
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H57/00—Guides for filamentary materials; Supports therefor
- B65H57/16—Guides for filamentary materials; Supports therefor formed to maintain a plurality of filaments in spaced relation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H57/00—Guides for filamentary materials; Supports therefor
- B65H57/28—Reciprocating or oscillating guides
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/15577—Apparatus or processes for manufacturing
- A61F2013/15821—Apparatus or processes for manufacturing characterized by the apparatus for manufacturing
- A61F2013/15861—Apparatus or processes for manufacturing characterized by the apparatus for manufacturing for bonding
- A61F2013/1591—Apparatus or processes for manufacturing characterized by the apparatus for manufacturing for bonding via adhesive
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- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Heart & Thoracic Surgery (AREA)
- Manufacturing & Machinery (AREA)
- Epidemiology (AREA)
- Biomedical Technology (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Mechanical Engineering (AREA)
- Absorbent Articles And Supports Therefor (AREA)
Abstract
A system and method applies a plurality of stretched elastic strands onto a substrate such as along a predetermined non-linear path, to form a leg gather of a disposable absorbent personal hygiene product. The system includes an adhesive dispensing module for individually applying adhesive to the elastic strands. A heated strand guide located downstream of the dispensing module includes guide openings for the respective elastic strands. A drive mechanism coupled to the strand guide actuates movement of the strand guide in a direction transverse to the movement direction of the substrate, thereby causing the elastic strands to be applied to the substrate along the predetermined non-linear path.
Description
Technical field
The present invention relates generally to adhesive dispensing systems and method, and more specifically, relates to for elastica bending or nonlinear is applied to suprabasil system and method.
Background technology
During the manufacturing of personal hygiene products such as diaper, adult incontinence products and the feminine hygiene products of disposable absorption, liquid adhesive such as hot-melt adhesive is applied in each ingredient.Distribution system has been developed for hot-melt adhesive is applied on each ingredient of personal hygiene products of disposable absorption.In an example, these distribution systems are applied to nonwoven substrate with one or more hot-melt adhesive long filaments, then this nonwoven substrate is adhered to one or more thin elasticas, with the elasticized part of the personal hygiene products that forms disposable absorption.In the downstream of distribution system, each ingredient (for example, flat base layer and elastica) through overpressure zone (pressure nip) so that these ingredients are fixed together.
The personal hygiene products of many disposable absorptions comprises adjacent with leg opening elasticized lower limb pleat section, in order to against the fixing personal hygiene products and comprise any waste material of being caught by personal hygiene products of user's lower limb.In these were used, high-caliber creep resistance was expected.Arbitrary end that " creep " of elastica is defined as elastica is adhered to the movement of the initial position of substrate from the end.If elastica experiences any significant creep compliance after assembling, then at least one end of elastica will be from substrate unsticking and reduce the ability that elasticized part still engages with skin surface securely significantly.For fear of this creep of not expecting, high-quality is in conjunction with being formed by the binding agent that is applied to elastica, so that elastica can be from the substrate unsticking.
To hold intelligible method be by additional binder is applied on substrate or the elastica thereby improve the quality of binding agent combination and reduce of creep.Yet, make along the length of elastica and pinned elastica and reduced the effectiveness that elastomeric material is applied to power substrate thereby too many binding agent is applied to elastica.In other words, elastica loses the ability that sufficient retraction force is applied to substrate.And the amount that is increased in the binding agent that uses in the personal hygiene products manufacturing of disposable absorption increases significantly cost and also reduces " feel " and the pliability of final products.Apply too many adhesive material and also may cause " burning ", this situation occurs when adhesive material burns or penetration adheres to substrate.Therefore, burn and the minimized while of hardness also keeping high-caliber creep resistance, high retraction force and make, the amount that is used for elastica is adhered to the binding agent of substrate should be minimized.
Elasticized lower limb pleat section is formed along the relative lateral edges of personal hygiene products.Lateral edges is bent to follow the profile of lower limb substantially.Therefore, expectation applies one or more elastica along the curved path adjacent with lateral edges, and this improves the cooperation around the elasticized part of user's lower limb., compare with the straight elastica of the profile of closely not following lateral edges for this reason, nonlinear or crooked elastica is applied to the substrate of personal hygiene products so that more comfortable cooperation and better protection against leakage become possibility.
The conventional system that is applied to the substrate of personal hygiene products for the elastica with bending comprises oscillating line roller or guide portion substantially, described oscillating line roller or guide portion must be oriented to be in close proximity to substrate so that the elastica that stretches along the nonlinear path of expectation by accurately and in the situation that fully tensioning apply.When many elasticas are applied in each lower limb pleat section, also prevent from mutually tangling before many elasticas are being applied to substrate in the limited gap between oscillating line guide portion and the substrate.Limited gap is generally about one centimetre, and this can't provide enough spaces for distribution module or the nozzle that binding agent is applied to elastica.And, according to concrete application parameter, the vibration of a large amount is moved can apply unacceptable high-caliber " gravity " to distribution module or nozzle, and that the vibration movement of described a large amount is elastica that distribution module or nozzle are followed in the downstream, limited gap of oscillating line guide portion is needed.
Therefore, before being applied to elastica in the substrate, the conventional system that is applied to substrate for the elastica with bending generally is applied to substrate with binding agent along the nonlinear path of expecting.Adhered to fully substrate in order to ensure elastica, too a large amount of binding agents must be applied to the nonlinear path of expectation.Yet, for above-described many reasons, applying a large amount of binding agents and do not expect, described reason is including, but not limited to the pliability that reduces or feel, the power retraction of restriction and the cost that increases.
Therefore, exist solving these difficulties and reducing to form the adhesive dispensing systems of amount of binding agent of the lower limb pleat section with nonlinear elasticity line and the needs of method.
Summary of the invention
According to an embodiment, comprise for the system that binding agent is applied to the first elastica of the many stretchings of moving along machine direction towards substrate: the first adhesive dispense module, this first adhesive dispense module is configured to binding agent is applied to respectively the first elastica.This system also comprises the First Line guide portion, and this First Line guide portion has for a plurality of first guide opening of admitting respectively the first elastica.The First Line guide portion is positioned in the downstream of the first adhesive dispense module and is configured near the substrate location, so that the first elasticity is adhered in the substrate after through the First Line guide portion.This system also comprises the primary heater with heating element heater, and this heating element heater is thermally coupled to the First Line guide portion, is used for heating the first guide opening, in order to prevent that adhesive deposits is on the First Line guide portion.Heating element heater is the binding agent of reheat on the first elastica before being applied to substrate also.
-aspect, the First Line guide portion also comprises: base portion, this base portion is configured to be connected to driving mechanism; Lead arm, this lead arm is from base portion towards base extension; And head, this head extends from lead arm.This head comprises the first guide opening and is oriented to fully near substrate, so that the spacing between the first adjacent elastica is maintained during adhering to the first elastica in the substrate.Heater comprises heat pipe, and this heat pipe is coupled to the head of First Line guide portion.
On the other hand, this system also comprises driving mechanism, and this driving mechanism is connected to the First Line guide portion and can operates, and moves the First Line guide portion in order to the direction in machine direction transversely.Because transverse shifting, the first elastica is applied in the substrate along predetermined nonlinear path.Driving mechanism also comprises the first saddle, and this first saddle is coupled to the First Line guide portion and is mounted on fixing guide rod movement along horizontal direction.This driving mechanism also comprises the driving shaft that is connected to the first saddle and the motor-driven cam of engages drive shaft.This cam rotation is so that the first saddle moves along the mode that moves around of horizontal direction with vibration.In certain embodiments, this system comprises the second line guide portion, and this second line guide portion has a plurality of the second guide opening for the second elastica of many stretchings.In these embodiments, driving mechanism activates First Line guide portion and the second line guide portion, make it along horizontal direction toward each other and the transverse shifting of mirror image away from each other, so that the first corresponding elastica and the second elastica are adhered in the substrate along opposite predetermined nonlinear path.
In according to another embodiment of the invention, when being applied to along the movement of machine direction and with binding agent along with elastica with on by the elastica of the many stretchings of being combined with substrate the time, use the line guide portion.This line guide portion comprises base portion, the lead arm from base portion towards base extension and the head that extends from lead arm.Head is oriented to adjacent with substrate and comprises for a plurality of guide opening of admitting elastica.The line guide portion also comprises the heater with heating element heater, and this heating element heater is thermally coupled to head, to be used for heating the first guide opening.The heating of guide opening is prevented that adhesive deposits is at the binding agent of reheat on elastica on the head and before being applied to substrate.-aspect, a plurality of guide opening comprise the pectination guide groove, this pectination guide groove is constructed such that the sliding-contact between guide opening and elastica minimizes.
In another embodiment, the elastica that stretches being applied to suprabasil method comprises binding agent is assigned to respectively on the elastica of stretching.The method also comprises: along with elastica moves along machine direction, make the elastica process line guide portion with binding agent.The method also comprises: the heater wire guide portion, and with reheat binding agent before being applied to substrate and in order to prevent that binding agent is along with elastica is piled up on the online guide portion through the line guide portion.The method also comprises: after making elastica process line guide portion, elastica is adhered in the substrate.
Description of drawings
For those ordinarily skilled in the art, after the following detailed description of the accompanying drawing that the combination of looking back illustrative embodiment is enclosed, various supplementary features of the present invention and advantage will become more obvious.
The accompanying drawing of enclosing of incorporating in this description and consisting of the part of this description illustrates embodiments of the invention, and plays the effect of explaining principle of the present invention together with the detailed description to general description of the present invention and the embodiment that hereinafter provides given above.
Fig. 1 is the partial, exploded perspective view of the personal hygiene products of the disposable absorption that comprises the elastica of following nonlinear path according to an embodiment of the invention.
Fig. 2 is for the side view that elastica is applied to an embodiment of suprabasil system along nonlinear path.
Fig. 3 is the front view of the system of Fig. 2.
Fig. 4 is the adhering device of system of Fig. 2 and the perspective view of driving mechanism.
Fig. 5 is one detailed perspective view in the line guide portion of system of Fig. 2.
Fig. 6 A is the schematic section of driving mechanism in primary importance of Fig. 4.
Fig. 6 B is the schematic section of driving mechanism in the second position of Fig. 6 A.
Fig. 7 is the driving mechanism of the system in primary importance of Fig. 6 A and the front view of line guide portion.
Fig. 8 is the driving mechanism in the second position of Fig. 7 and the front view of line guide portion.
The specific embodiment
Fig. 1 illustrates an embodiment of the personal hygiene products 10 of the disposable absorption of using demonstrative system of the present invention and method manufacturing.The personal hygiene products 10 of illustrated disposable absorption is disposable diaper 10, and this disposable diaper 10 comprises: first end 12 and the second end 14, and first end 12 and the second end 14 are configured to twine user's waist; And the core 16 that narrows, it is formed between user's the lower limb and extends.Diaper 10 comprises: smooth nonwoven substrate 18; Lower limb pleat section 20, its each vertical side 22 along the diaper 10 between first end 12 and the second end 14,24 forms; And second flat base 26, it is secured to nonwoven substrate 18 with sealing lower limb pleat section 20.Lower limb pleat section 20 is formed by the one or more elasticas 28 that are secured to nonwoven substrate 18 under the state that stretches, thereby the elastic diaper 10 that has around user's lower limb is provided.The second flat base 26 is another nonwoven substrate.Nonwoven substrate 18, lower limb pleat section 20 and the second substrate 26 utilize hot-melt adhesive 30 and are mutually fastening.As shown in fig. 1, elastica 28 is fixed to nonwoven substrate 18 with non-linear orientation, thereby follows vertical side 22,24 of diaper 10.More specifically, the nonlinear path that is limited by elastica 28 is basically crooked path, it should be understood that, this nonlinear path can comprise a plurality of linear portion in other embodiments.What illustrate equally among Fig. 1 is, elastica 28 scribbles respectively binding agent 30, with the total amount of the binding agent 30 that minimizes to form lower limb pleat section 20.
According to of the present invention for elastica 28 is illustrated at Fig. 2-8 along the exemplary embodiment 40 that nonlinear path is applied to the system on the nonwoven substrate 18.By the concrete reference to Fig. 2 and Fig. 3, system 40 comprises line locating rack 42 and a plurality of adhesive dispense module 44.In the downstream of adhesive dispense module 44, system 40 also comprises First Line guide portion 46 and the second line guide portion 48 that is connected to driving mechanism 50, and this driving mechanism 50 is constructed such that line guide portion 46,48 moves.First Line guide portion 46 and the second line guide portion 48 are oriented to very approach or adjacent to adhering device 52, at adhering device 52 places, elastica 28 is applied in nonwoven substrate 18 and/or the second substrate 26.Therefore, along with First Line guide portion 46 and the second line guide portion 48 with transverse to moving back and forth translation by the vibration of the machine direction of arrow 54 indications, the elastica 28 on each in First Line guide portion 46 and the second line guide portion 48 is applied on the nonwoven substrate 18 with the Nonlinear Bending pattern.
As being clearly shown that among Fig. 2, adhering device 52 comprises the feed rolls 60 of the serialgram of the serialgram that transports nonwoven substrate 18 and the second substrate 26.Adhering device 52 comprises that also elastica 28 is expressed in nonwoven substrate 18 and/or the second substrate 26 one or more applies roller 62.Intelligible as holding in the art, adhering device 52 can also comprise that the nip (not shown) is to guarantee the adhesion of the elastica 28 between nonwoven substrate 18 and the second substrate 26.Should be understood that among other embodiment within the scope of the invention, adhering device 52 can replacedly comprise fold mechanism, this fold mechanism folds into the first of nonwoven substrate 18 oneself with it and crosses elastica 28.
Referring to figs. 2 and 3, line locating rack 42 comprises a pair of interval roller 64, this a pair of interval roller 64 is such as coupled by the support bar 66 that is clamped to Support bracket 68.Interval roller 64 comprises for a plurality of grooves 70 of admitting the elastica 28 of introducing.Just in this point, the elastica 28 that extends through groove 70 is spaced from each other by the spacing with expectation and kept being tensioned before marching to distribution module 44.Interval roller 64 can move along support bar 66,44 fixed positions of selecting take coupling as distribution module.Should be understood that the quantity of the elastica 28 of the lower limb pleat section 20 of depending on to form diaper 10, interval roller 64 can comprise more or less groove 70, and this changes according to diaper 10.
After the groove 70 in super-interval roller 64, many elasticas 28 are transferred into one or more distribution module 44 immediately.Distribution module 44 can comprise the contact that binding agent is applied to respectively elastica 28 or the contactless adhesive dispense module of any type.For example, be commercially can to obtain from the Nordson Corporation of Ohio, USA Westlake in the distribution module 44 shown in the illustrated embodiment
Module.For this reason, the distribution module 44 of exemplary embodiment is such as the contactless spiral distribution module that further describes in the U.S. Patent No. 7,578,882 of authorizing the people such as Harris, whole open this paper that incorporates into by reference accordingly of this United States Patent (USP).Such distribution module 44 generally comprises module body 72 and is fastened to removedly the nozzle 74 of module body 72 by clamp mechanism 76.Nozzle end 74 is applied to every elastica 28 with the long filament of binding agent.Replacedly, distribution module 44 can be other contactless nozzle of describing in the open No.2010/0327074 of the United States Patent (USP) of authorizing the people such as Bondeson, or such as the U.S. Patent No. 4 of authorizing De Jonckheere, 917, other contact nozzle of describing in 696, its whole disclosure is incorporated this paper into by reference at this.In another example, distribution module 44 is based on the contact applicator of roller.Regardless of the type of the distribution module 44 of using, distribution module 44 all advantageously is mounted to fixing and impact be not subjected to any acceleration or " gravity " in the operating period of system 40.Then the elastica 28 of coating advances to First Line guide portion 46 and the second line guide portion 48 from distribution module 44 respectively.
Fig. 3-5 further illustrates basically identical First Line guide portion 46 and the second line guide portion 48.Therefore, the following description of First Line guide portion 46 equally also is applicable to the second line guide portion 48, and the identical element on the second line guide portion 48 is marked by the identical Reference numeral that uses hereinafter.First Line guide portion 46 comprises base portion 80, and this base portion 80 is connected to driving mechanism 50 by one or more securing member 82.First Line guide portion 46 also comprises the lead arm 84 that extends to head 86 from base portion 80, and it is oriented to very approach or adjacent to adhering device 52.Just in this point, lead arm 84 52 extensions from base portion 80 towards adhering device.A plurality of the angle part arranged although lead arm 84 is shown as to be included on the transverse width towards what head 86 came to a point gradually, among other embodiment within the scope of the invention, the given shape of lead arm 84 and profile can be modified.The head 86 of First Line guide portion 46 also comprises a plurality of guide opening 88 corresponding with the quantity of the elastica 28 that passes through First Line guide portion 46.Each guide opening 88 is pectination guide grooves 88 of basically wedge shape, so that the sliding-contact between guide opening 88 and elastica 28 is minimized.Guide opening 88 is spaced from each other by the identical spacing of setting with interval roller 64 places of online locating rack 42, thereby keeps near the elastica 28 of the sticking point spacing in nonwoven substrate 18 and/or the second substrate 26.Should be understood that guide opening 88 is shown as guide groove 88 in the exemplary embodiment, but among other embodiment within the scope of the invention, this guide opening 88 can limit hole, pectination recess or other opening.
The First Line guide portion also comprises the heater 90 for heater head 86 and guide opening 88.In the exemplary embodiment, heater 90 comprises heater core 92, and this heater core 92 is installed on the lead arm 84 adjacent with base portion 80 and is connected to the power supply (not shown).Heater 90 also comprises heating element heater 94, and this heating element heater 94 extends to head 86 or extends to the position adjacent with the joint of head 86 and lead arm 84 from heater core 92 with the form of heat pipe 94.In the exemplary embodiment of heater 90, heat pipe 94 can be soldered to head 86.The thermal energy transfer that heat pipe 94 will be produced by heater core 92 is to head 86 so that guide opening 88 basically be heated at the hot-melt adhesive 30 on the elastica 28 expectation apply temperature.Therefore, along with elastica 28 through guide opening 88, heated line guide portion 46 will be binding agent 30 reheat of cooling in the relative long distance between distribution module 44 and the First Line guide portion 46 to the temperature that applies of expecting.Should be understood that heater 90 can comprise the heat-transfer arrangement of other type among other embodiment within the scope of the invention, such as thermolamp and the conduction heaters that is thermally coupled to other type of line guide portion 46.
In addition, head 86 and guide opening 88 heating are helped to prevent that binding agent 30 is along with elastica 28 is deposited on the head 86 through line guide portion 46,48.After trial runs in five minutes of system 40, in the situation that elastica 28 is applied on the entire volume nonwoven substrate 18, there is no that adhesive material is gathered on the head 86 of First Line guide portion 46 and the second line guide portion 48.This favourable result is considered to occur owing to many factors, and described many factors comprises the heating of guide opening 88, contacts and the binding agent 30 that makes of elastica 28 is pulled away from the high-speed of guide opening 88 minimizing between guide opening 88 and the elastica 28.Therefore, as the result through the first line guide portion 46 that heats and the second line guide portion 48 that heats, elastica 28 does not lose any hot-melt adhesive 30 that is applied by distribution module 44 basically.
As being clearly shown that among Fig. 4, the spacing or the gap 96 that limit between the guide opening 88 in First Line guide portion 46 and the second line guide portion 48 and the adhering device 52 are minimized.More specifically, key is, this gap 96 is less than two centimetres, and more preferably, less than one centimetre.What guaranteed in minimized gap 96 is that the tensioning of elastica 28 or elongation are maintained basically at the some place that adheres on the nonwoven substrate 18.And hot-melt adhesive 30 not free temperature that applies from expectation before being applied in the substrate 18 is cooled off, thereby it is bonding to improve the binding agent that forms between elastica 28 and substrate 18.What also guaranteed in minimized gap 96 is that on the whole length of elastica 28, the spacing between the elastica 28 is maintained all the time.
By continuing with reference to figure 3 and Fig. 4, driving mechanism 50 also comprises the first saddle 100 and the second saddle 102, and described the first saddle 100 and the second saddle 102 are mounted at one or more fixing guide rod 104(two guide rods 104 being shown in the drawings) on slip move.In the first saddle 100 and the second saddle 102 each all is configured to along guide rod 104 moving in a lateral direction by arrow 106 indications.In the saddle 100,102 each all is the plate type members that comprise groove 108, and this groove 108 is configured to admit corresponding line guide portion 46,48 base portion 80.For this reason, the first saddle 100 is coupled to the base portion 80 of First Line guide portion 46, and the second saddle 102 is coupled to the base portion 80 of the second line guide portion 48.Driving mechanism 50 also comprises driving shaft 110, and this driving shaft 110 is fixedly coupled to each in the first saddle 100 and the second saddle 102.More specifically, driving shaft 110 comprises: outer driving shaft section 112, and it is connected to the first saddle 100; And interior driving axial region 114, it is connected to the second saddle 102.Outer and inner driving axial region 112,114 is configured to move independently of one another.Therefore, interior driving axial region 114 extends through the whole length of outer driving shaft section 112 and extends to outside the outer driving shaft section 112, thereby is connected to the second saddle 102.Backplate 116 is positioned between saddle 100 and 102, in order to guide interior axial region 114 and to prevent the first saddle 100 and the second saddle 102 interferes with each other.Driving shaft 110 extends to motor-driven cam (not shown among Fig. 3 and Fig. 4) from saddle 100,102, and this motor-driven cam can be positioned at the inside of the drive mechanism housing 118 shown in Fig. 4.
The motor-driven cam 120 that is arranged in the drive mechanism housing 118 of driving mechanism 50 schematically illustrates at Fig. 6 A and Fig. 6 B.Motor-driven cam 120 comprises the first cam 122 and the second cam 124 that rotatably is connected to public camshaft 126.Outer driving shaft section 112 comprises actuator arm 128, and this actuator arm 128 passes housing 118 and extends, and contacts the first cam 122.Similarly, interior driving axial region 114 comprises actuator arm 130, and this actuator arm 130 passes housing 118 and extends, and contacts with the second cam 124.In the actuator arm 128,130 each is all biased by spring 132, contacts continuously with corresponding cam 122,124, as shown in Fig. 6 A and Fig. 6 B.Therefore, so that when cam 122,124 rotation, the irregular peripheral profile of the first cam 122 and the second cam 124 impels outer driving shaft section 112 and interior driving axial region 114 to move along horizontal direction when camshaft 126 rotation.
For example, in the primary importance shown in Fig. 6 A, outer driving shaft section 112 is pulled to the left side, and interior driving axial region 114 is pulled to the right, and in the second position shown in Fig. 6 B, outer driving shaft section 112 is pulled to the right, and interior driving axial region 114 is pulled to the left side.Just in this point, outer driving shaft section 112 and interior driving axial region 114 make the first saddle 100 and the second saddle 102 vibrate along reciprocal horizontal direction.According to this exemplary embodiment, by changing the irregular peripheral profile of the first cam 122 and the second cam 124, can revise relatively moving of outer driving shaft section 112 and interior driving axial region 114.
Operating among Fig. 7 and Fig. 8 of driving mechanism 50 and system 40 further illustrates.With reference to figure 7, driving mechanism 50 is illustrated and is in the primary importance of before describing in Fig. 6 A.With reference to figure 8, driving mechanism 50 is illustrated and is in the second position of before describing in Fig. 6 B.For this reason, motor-driven cam 120 drives the first saddles 100 and the second saddle 102 and First Line guide portion 46 and the second line guide portion 48 along horizontal direction away from each other, as among Fig. 7 by shown in the arrow 134.Then, motor-driven cam 120 drives the first saddles 100 and the second saddle 102 and First Line guide portion 46 and the second line guide portion 48 moves towards each other along horizontal direction, as among Fig. 8 by shown in the arrow 136.Just in this point, driving mechanism 50 can make saddle 100,102 laterally circulation or mobile between these primary importances and the second position repeatedly, so that elastica 28 is applied in the substrate 18 along predetermined nonlinear path.
For example, driving mechanism 50 can begin the first end 12 near diaper 10 in the isolated position shown in Fig. 7, then make line guide portion 46,48 be moved into the position of Fig. 8, with narrow vertical side 22,24 of section 16 of the center of following, then make line guide portion 46,48 outwards move back to the position of Fig. 7, stop with the second end 14 near diaper.Therefore, driving mechanism 50 activates the opposite transverse shifting of First Line guide portion 46 and the second line guide portion 48, and to produce relative lower limb pleat section 20, in relative lower limb pleat section 20, elastica 28 is followed opposite nonlinear path.Because diaper 10 generally forms by substrate 18 with at the cut continuous elastica 28 of the downstream part of adhering device 52, so the run duration in system 40, driving mechanism 50 make repeatedly transverse shifting of the first saddle 100 and the second saddle 102 and First Line guide portion 46 and the second line guide portion 48.As shown in Fig. 7 and Fig. 8, because the long distance between distribution module 44 and adhering device 52, so advantageously minimized in deflection in a lateral direction or the inclination of fixing distribution module 44 and the elastica 28 between the adhering device 52.
Therefore, system 40 can operate, with many respectively the elastica 28 of coating be applied on the nonwoven substrate 18 along one or more predetermined nonlinear path.What heated line guide portion 46,48 was guaranteed is, elastica 28 is followed nonlinear path, keeps simultaneously enough spacings between the adjacent elastica 28 and binding agent 30 is maintained the temperature that applies of expectation.In addition, along with the guide opening 88 of elastica 28 through line guide portion 46,48, binding agent 30 remains on the elastica 28.Compare with the zone that will apply elastica 28 in the substrate 18 is applied, binding agent 30 is applied to applying respectively of every elastica 28 needs less adhesive material.Therefore, the amount that is used for elastica 28 is bonded to the binding agent in the substrate 18 can be optimised, thereby produces creep resistance, product pliability and the power retraction level of aspiration level.Therefore, utilize nonlinear elasticity line 28 and to the minimizing of the use of hot-melt adhesive 30, system 40 produces the personal hygiene products 10 of favourable disposable absorption.
Although set forth the present invention by the description to specific embodiment of the present invention, although and with suitable details embodiment has been described, be not intended to the range constraint of appended claims to or be limited to by any way such details.Various feature discussed in this article can be used individually or be used with combination in any.Other advantage and modification will be apparent to one skilled in the art.For example, in interchangeable embodiment, above disclosed line guide portion can be used single elastica is applied in the suprabasil situation.Therefore, the present invention shown in it is not limited to aspect widely with described illustrative example, representative device and method and specific details.Therefore, in the situation of the scope that does not break away from present general inventive concept or spirit, can make change to such details.
Claims (17)
1. one kind is used for binding agent is applied to system on the first elastica of the many stretchings of moving along machine direction towards substrate, and described system comprises:
The first adhesive dispense module, described the first adhesive dispense module is configured to binding agent is applied to respectively described the first elastica;
The First Line guide portion, described First Line guide portion comprises for a plurality of first guide opening of admitting respectively described the first elastica, and described First Line guide portion is positioned in the downstream of described the first adhesive dispense module and is configured near described substrate location, so that described the first elastica is being adhered in the described substrate through after the described First Line guide portion; And
Primary heater, described primary heater comprises heating element heater, described heating element heater is thermally coupled to described First Line guide portion, be used for heating described the first guide opening, in order to prevent that adhesive deposits is on the described First Line guide portion and in order to be applied to the binding agent of reheat on described the first elastica before the described substrate.
2. system according to claim 1, wherein said First Line guide portion also comprises:
Base portion;
Lead arm, described lead arm is configured to from described base portion towards described base extension; And head, described head is from described lead arm extension and comprise described the first guide opening.
3. system according to claim 2, wherein said heating element heater is the heat pipe that is coupled to the described head of described First Line guide portion.
4. system according to claim 1 also comprises:
Driving mechanism, described driving mechanism is coupled to described First Line guide portion and can operates, in order to move described First Line guide portion along the direction transverse to described machine direction, so that described the first elastica is applied in the described substrate along predetermined nonlinear path.
5. system according to claim 4, wherein said driving mechanism also comprises:
The first saddle, described the first saddle are coupled to described First Line guide portion and are mounted for moving along described horizontal direction on fixing guide rod;
Driving shaft, described driving shaft are coupled to described the first saddle; And
Motor-driven cam, described motor-driven boss engages described driving shaft and can operate, and uses so that described the first saddle moves along described horizontal direction along with the rotation of described cam.
6. system according to claim 5, wherein said cam can operate, with so that described the first saddle and described First Line guide portion vibrate back and forth, to apply described the first elastica along described predetermined nonlinear path.
7. system according to claim 4 also comprises:
The second adhesive dispense module, described the second adhesive dispense module is configured to binding agent is applied to respectively the second elastica of many stretchings; And
The second line guide portion, described the second line guide portion comprises for a plurality of second guide opening of admitting respectively described the second elastica, and described the second line guide portion is positioned in the downstream of described the second adhesive dispense module and is configured near described substrate location, so that described the second elastica is being adhered in the described substrate through after described the second line guide portion
Wherein said driving mechanism is coupled to described the second line guide portion and can operates, in order to move on the contrary described the second line guide portion along described horizontal direction and with described First Line guide portion along the movement of described horizontal direction, so that described the first elastica and described the second elastica are applied in the described substrate along opposite nonlinear path.
8. system according to claim 1, wherein said First Line guide portion are oriented to fully near described substrate, so that during adhering to described the first elastica in the described substrate, the spacing between the first adjacent elastica is maintained.
9. line guide portion that is used for use when the elastica that scribbles binding agent with many stretchings is applied in the substrate along with described elastica along moving of machine direction, described line guide portion comprises:
Base portion;
Lead arm, described lead arm is from described base portion towards described base extension;
Head, described head is from described lead arm extension and comprise a plurality of guide opening, and described a plurality of guide opening are positioned close to described substrate, so that described elastica is being adhered in the described substrate through after the described guide opening; And
Heater, described heater comprises heating element heater, described heating element heater is thermally coupled to described head, is used for heating described guide opening, in order to prevent that adhesive deposits is on the described head and in order to be applied to the binding agent of reheat on described the first elastica before the described substrate.
10. line guide portion according to claim 9, wherein said heating element heater is the heat pipe that is coupled to described head.
11. line guide portion according to claim 9, wherein said head are oriented to fully near described substrate, so that during adhering to described elastica in the described substrate, the spacing between the adjacent elastica is maintained.
12. line guide portion according to claim 9, wherein said a plurality of guide opening comprise the pectination guide groove, and described pectination guide groove is constructed such that the sliding-contact between described guide opening and the described elastica minimizes.
13. the elastica with many stretchings is applied to suprabasil method, described method comprises:
Binding agent is assigned to respectively on the described elastica;
Along with described elastica moves along machine direction, make the line guide portion of locating through contiguous described substrate with the described elastica of binding agent;
Heat described line guide portion, in order to reheat binding agent before being applied to described substrate and in order to prevent that binding agent is along with described elastica is deposited on the described line guide portion through described line guide portion; And
Making described elastica through after the described line guide portion, described elastica is adhered in the described substrate.
14. method according to claim 13 also comprises:
Described line guide portion is moved, so that described elastica is applied in the described substrate along predetermined nonlinear path along the direction transverse to described machine direction.
15. method according to claim 14, wherein said line guide portion is coupled to the saddle of driving mechanism, and described driving mechanism also comprises driving shaft, and described driving shaft is coupled to described saddle and motor-driven cam, and described method also comprises:
Make described cam rotation, so that described driving shaft, described saddle and described line guide portion move along described horizontal direction.
16. method according to claim 15 wherein makes described cam rotation also comprise:
Make described cam rotation, so that described saddle and described line guide portion are vibrated back and forth along described horizontal direction.
17. method according to claim 15 wherein makes described elastica also comprise through described line guide portion:
Set the spacing between the adjacent elastica, and described spacing is maintained during adhering to described elastica in the described substrate.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US13/417,783 US8720517B2 (en) | 2012-03-12 | 2012-03-12 | System and method for applying individually coated non-linear elastic strands to a substrate |
| US13/417,783 | 2012-03-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103300972A true CN103300972A (en) | 2013-09-18 |
| CN103300972B CN103300972B (en) | 2017-09-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310078725.8A Expired - Fee Related CN103300972B (en) | 2012-03-12 | 2013-03-12 | System and method for being applied to the nonlinear elasticity line of many coatings respectively in substrate |
Country Status (5)
| Country | Link |
|---|---|
| US (2) | US8720517B2 (en) |
| EP (1) | EP2659867B1 (en) |
| JP (1) | JP6214886B2 (en) |
| CN (1) | CN103300972B (en) |
| ES (1) | ES2529165T3 (en) |
Cited By (1)
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|---|---|---|---|---|
| CN107921772A (en) * | 2015-06-22 | 2018-04-17 | 株式会社瑞光 | The manufacture device and manufacture method of composite extensible member |
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|---|---|---|---|---|
| EP3435943B1 (en) | 2016-03-28 | 2022-03-16 | Kimberly-Clark Worldwide, Inc. | Method for applying elastic strands |
| AU2016425425B2 (en) | 2016-09-30 | 2022-08-04 | Kimberly-Clark Worldwide, Inc. | Apparatus and method for applying a first web to a base web in a nonlinear pattern |
| MX2019002508A (en) | 2016-09-30 | 2019-06-24 | Kimberly Clark Co | Apparatus and method for applying a first web to a base web in a nonlinear pattern. |
| CN110680614B (en) * | 2019-10-10 | 2021-06-15 | 爹地宝贝股份有限公司 | Absorbent material roll-cutting device of adult diaper production line |
| CN112897238B (en) * | 2021-02-01 | 2022-07-26 | 苏邦金属制品(南通)有限公司 | Wire harness guiding and supporting wire casing and production process thereof |
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- 2013-02-27 ES ES13156924.6T patent/ES2529165T3/en active Active
- 2013-03-12 CN CN201310078725.8A patent/CN103300972B/en not_active Expired - Fee Related
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Also Published As
| Publication number | Publication date |
|---|---|
| US20140196836A1 (en) | 2014-07-17 |
| CN103300972B (en) | 2017-09-26 |
| US9283120B2 (en) | 2016-03-15 |
| JP2013188477A (en) | 2013-09-26 |
| US20130233472A1 (en) | 2013-09-12 |
| EP2659867B1 (en) | 2014-11-26 |
| ES2529165T3 (en) | 2015-02-17 |
| JP6214886B2 (en) | 2017-10-18 |
| EP2659867A1 (en) | 2013-11-06 |
| US8720517B2 (en) | 2014-05-13 |
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